Redken Extreme Lengths Shampoo & Leave In Treatment Duo

Redken's Extreme Length Shampoo and Leave-In Treatment are formulated with biotin and soy protein. Biotin, a B-vitamin, is known to strengthen hair and promote healthy growth, while soy protein helps fortify hair fibers, reducing breakage and enhancing overall hair strength.

The Extreme Length system, when used as a complete regimen—including the shampoo, conditioner, and leave-in treatment—has been shown to reduce hair breakage by up to 81%. This is achieved through the strengthening properties of biotin and soy protein, which fortify the hair strands, making them more resilient to damage.

Yes, Redken's Extreme Length Shampoo is safe for color-treated hair. Its gentle cleansing formula helps maintain hair color vibrancy while strengthening the hair to promote longer, healthier strands.

The Extreme Length Leave-In Treatment is designed for daily use and is formulated to be lightweight, ensuring it doesn't weigh hair down. It adds manageability, smoothness, and shine without compromising volume.

While individual results may vary, consistent use of the Extreme Length system can help achieve up to 6 inches of hair growth in a year. Visible improvements in hair strength and reduction in breakage can often be noticed within a few weeks of regular use.